121121011001 has 8 divisors (see below), whose sum is σ = 128347662240. Its totient is φ = 113905680448.

The previous prime is 121121010979. The next prime is 121121011013. The reversal of 121121011001 is 100110121121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 121121011001 - 2⁶ = 121121010937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121121011061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2808131 + ... + 2850936.

It is an arithmetic number, because the mean of its divisors is an integer number (16043457780).

Almost surely, 2^121121011001 is an apocalyptic number.

It is an amenable number.

121121011001 is a deficient number, since it is larger than the sum of its proper divisors (7226651239).

121121011001 is a wasteful number, since it uses less digits than its factorization.

121121011001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5660343.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 121121011001 its reverse (100110121121), we get a palindrome (221231132122).

The spelling of 121121011001 in words is "one hundred twenty-one billion, one hundred twenty-one million, eleven thousand, one".